Powerful functions : Long standby,waterproof,heart rate monitoring, caller ID, SMS / mail vibration reminder, step, distance, calorie consumption, time display, sleep monitoring, shake camera, anti-lost remind, intelligent alarm clock, sports information sharing</br>Bluetooth Standby for 7 days is a wonderful gift to your families and friends</br>Anti-lost reminder: When the bracelet is connected to the phone, the bracelet 10m away from the phone, the phone will automatically alarm to prevent loss.</br>Occasion:suitable for outdoor,travel,driving,gathering,fitness</br>Warranty: our smart watch has 3 month warranty , and any questions , please feel free to contact us .</br></br>Product Description</br></br><b>Product specification:</b> <br><br>>Product: smart heart blacelet <br>Bluetooth version:4.0 <br>Master chip:dialog DA14580 <br>Sensor :resting heart rate sensor <br>Acceleration sensor:3-asix acceleration sensor <br>IP rate:IP65 <br>Working time :10 days <br>Battery capacity :4.5mAh <br>Control mode : Touch screen <br>display :OLED 0.69 inch <br>Operating system: bluetooth 4.0 ,IOS 7 version above or and version above <br><br><b>Package Including</b> <BR><BR>1pcs USB cable <BR>1pcs manual <BR>1pcs Smart bracelet</br><br/>http://www.amazon.com/gp/product/B01MXVL9W4